The best hunting properties I know in SE MN are filled with buckthorn. I have no doubt that you could have equally good or better hunting with an understory of native shrubs, but spots like that are rare. I try to control buckthorn in areas adjacent to beneficial shrubs hoping that the good stuff will eventually take over, but I'm not convinced the juice is worth the squeeze.
I logged my place 4 years ago and some pockets are filling in with mostly buckthorn and bush honeysuckle. Those areas are holding so many deer it is almost unbelievable, so the invasives can stay!
I should note that in our area, the limiting factor is cover once the neighboring corn fields are harvested. When gun season hits in the peak of the rut, the thickest cover holds the most deer and 90% of the time that is buckthorn filled woodlots.